var echarts = require("echarts");

var _default = echarts.extendComponentView({
    type: 'bmap',
    render: function (bMapModel, ecModel, api) {
        var rendering = true;
        var bmap = bMapModel.getBMap();
        var viewportRoot = api.getZr().painter.getViewportRoot();
        var coordSys = bMapModel.coordinateSystem;

        var moveHandler = function (type, target) {
            if (rendering) {
                return;
            }

            var offsetEl = viewportRoot.parentNode.parentNode.parentNode;
            var mapOffset = [-parseInt(offsetEl.style.left, 10) || 0, -parseInt(offsetEl.style.top, 10) || 0];
            viewportRoot.style.left = mapOffset[0] + 'px';
            viewportRoot.style.top = mapOffset[1] + 'px';
            coordSys.setMapOffset(mapOffset);
            bMapModel.__mapOffset = mapOffset;
            api.dispatchAction({
                type: 'bmapRoam'
            });
        };

        function zoomEndHandler() {
            if (rendering) {
                return;
            }

            api.dispatchAction({
                type: 'bmapRoam'
            });
        }

        bmap.removeEventListener('moving', this._oldMoveHandler); // FIXME
        // Moveend may be triggered by centerAndZoom method when creating coordSys next time
        // bmap.removeEventListener('moveend', this._oldMoveHandler);

        bmap.removeEventListener('zoomend', this._oldZoomEndHandler);
        bmap.addEventListener('moving', moveHandler); // bmap.addEventListener('moveend', moveHandler);

        bmap.addEventListener('zoomend', zoomEndHandler);
        this._oldMoveHandler = moveHandler;
        this._oldZoomEndHandler = zoomEndHandler;
        var roam = bMapModel.get('roam');

        if (roam && roam !== 'scale') {
            bmap.enableDragging();
        } else {
            bmap.disableDragging();
        }

        if (roam && roam !== 'move') {
            bmap.enableScrollWheelZoom();
            bmap.enableDoubleClickZoom();
            bmap.enablePinchToZoom();
        } else {
            bmap.disableScrollWheelZoom();
            bmap.disableDoubleClickZoom();
            bmap.disablePinchToZoom();
        }

        var originalStyle = bMapModel.__mapStyle;
        var newMapStyle = bMapModel.get('mapStyle') || {}; // FIXME, Not use JSON methods

        var mapStyleStr = JSON.stringify(newMapStyle);

        if (JSON.stringify(originalStyle) !== mapStyleStr) {
            // FIXME May have blank tile when dragging if setMapStyle
            if (Object.keys(newMapStyle).length) {
                bmap.setMapStyle(newMapStyle);
            }

            bMapModel.__mapStyle = JSON.parse(mapStyleStr);
        }

        rendering = false;
    }
});

module.exports = _default;